import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;

class MyThreadPool{
    //任务队列
    private BlockingQueue<Runnable> queue = new ArrayBlockingQueue<>(1000);

    //通过这个方法, 把任务添加到队列中
    public void submit(Runnable runnable) throws InterruptedException{
        queue.put(runnable);
    }

    public MyThreadPool(int n){
        //创建n个线程, 负责执行上述队列中的任务
        for(int i = 0; i < n; i++)
        {
            Thread t = new Thread(() -> {
                try {
                    Runnable runnable = queue.take();
                    runnable.run();
                }catch (InterruptedException e){
                    e.printStackTrace();
                }
            });

            t.start();
        }
    }
}
public class Demo28 {
    public static void main(String[] args) throws InterruptedException {
        MyThreadPool myThreadPool = new MyThreadPool(4);
        for(int i = 0; i < 1000; i++){
            int id = i;
            myThreadPool.submit(new Runnable() {
                @Override
                public void run() {
                    System.out.println("执行任务: " + id);
                }
            });
        }
    }
}
